| 摘要 |
PURPOSE:To reduce the number of setting means while to facilitate setting of referential level, by providing means for setting one referential level and means for operating another referential level having specific relation from said one referential level. CONSTITUTION:Means for setting one referential level and means for operating another referential level having specific relation from said one referential level are provided. For example, pressure setting means 24 and rotation setting means 25 will set the referential delivery pressure Hs and referential rotation Nmin of pump. Other referential levels are operated by operating means or a microcomputor 26 on the basis of said referential levels Hs, Nmin. Fewer setting means than the number of necessary referential level is required to facilitate the setting. |
